How To Fix /SDF/DB6118 - Too many lock escalations occur in the system

SAP Error Message - Details

• Message type: E = Error

• Message class: /SDF/DB6 -

• Message number: 118

• Message text: Too many lock escalations occur in the system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SDF/DB6118 - Too many lock escalations occur in the system ?

  The SAP error message /SDF/DB6118 Too many lock escalations occur in the system typically indicates that the database is experiencing a high number of lock escalations. Lock escalation occurs when a database system converts many fine-grained locks (like row-level locks) into a larger lock (like a table-level lock) to reduce the overhead of managing many locks. This can lead to performance issues and contention for resources.
  Causes:
  
  High Concurrency: A large number of transactions trying to access the same data simultaneously can lead to many row-level locks, which may trigger escalations.
  Long-Running Transactions: Transactions that hold locks for an extended period can increase the likelihood of lock escalations.
  Insufficient Locking Resources: The database may not have enough resources allocated for managing locks, leading to escalations.
  Poorly Designed Queries: Inefficient queries that access a large number of rows can lead to excessive locking.
  Configuration Issues: Database configuration settings related to locking and memory management may not be optimized.
  
  Solutions:
  
  Analyze Locking Behavior: Use transaction monitoring tools to analyze which transactions are causing the most locks and why.
  Optimize Queries: Review and optimize SQL queries to reduce the number of rows locked and the duration of locks.
  Reduce Transaction Duration: Break long-running transactions into smaller ones to minimize the time locks are held.
  Increase Lock Resources: If applicable, adjust database configuration settings to allow for more locks or increase memory allocated for lock management.
  Implement Locking Strategies: Consider using optimistic locking or other strategies that reduce the need for locks.
  Database Tuning: Work with your database administrator to tune the database for better performance and locking behavior.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Database Documentation: Review the documentation for your specific database (e.g., Oracle, SQL Server, HANA) for best practices on managing locks and performance tuning.
  Monitoring Tools: Utilize SAP monitoring tools (like ST03N, ST04) to analyze performance and locking issues.
  SAP Community: Engage with the SAP Community for insights and experiences from other users who may have faced similar issues.
  
  By addressing the underlying causes and implementing the suggested solutions, you can reduce the occurrence of lock escalations and improve overall system performance.